Overview
In this blog post, we will be discussing a critical vulnerability, CVE-2025-32291, that impacts the popular affiliate marketing tool, FantasticPlugins SUMO Affiliates Pro. This vulnerability, with a CVSS severity score of 10.0, poses a serious threat to businesses using this software due to its potential for system compromise or data leakage. Such unrestricted upload of file with dangerous type vulnerability could be exploited by attackers to upload malicious files, thereby compromising the integrity, availability, and confidentiality of the affected systems.
Vulnerability Summary
CVE ID: CVE-2025-32291
Severity: Critical (CVSS score 10.0)
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Impact: System compromise, potential data leakage
Affected Products
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Product | Affected Versions
FantasticPlugins SUMO Affiliates Pro | Up to version 10.7.0
How the Exploit Works
The vulnerability arises due to the software’s failure to properly validate the types of files uploaded by users. An attacker can exploit this by uploading a malicious file containing executable code. Once the file is uploaded and executed on the server, it can lead to a full compromise of the system.
Conceptual Example Code
The following example demonstrates a conceptual exploit of this vulnerability. This is a HTTP POST request that uploads a malicious file to the vulnerable endpoint.
POST /upload_file HTTP/1.1
Host: target.example.com
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="file"; filename="malicious_file.php"
Content-Type: application/x-php
[INSERT MALICIOUS PHP CODE HERE]
------WebKitFormBoundary7MA4YWxkTrZu0gW--Please note that the above is a conceptual example and the actual exploit may modify the filename, content type, and malicious payload depending on the specific circumstances of the target system.
Mitigation Guidance
The vendor has released a patch to address this vulnerability, and users are strongly advised to update to the latest version of SUMO Affiliates Pro. As a temporary mitigation, users can also employ a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to block attempts to exploit this vulnerability.